The habitats where blunt-flowered rush~(Juncus subnodulosus) grows:

Blanket bog
Coastal floodplain grazing marsh
Dune slack
Limestone pavement
Lowland fen
Moist damp verges and banks
Nutrient rich eutrophic lake
Purple moor grass and rush pasture
Reedbed
Sand dune
Upland acid grassland
Upland spring flush
Wet woodland